io.apicurio.registry.resolver.utils.Utils Maven / Gradle / Ivy
/*
* Copyright 2020 Red Hat
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.apicurio.registry.resolver.utils;
import java.util.function.Consumer;
/**
* @author Ales Justin
*/
public class Utils {
@SuppressWarnings("unchecked")
public static Class loadClass(String javaType) {
try {
return (Class) Thread.currentThread().getContextClassLoader().loadClass(javaType);
} catch (ClassNotFoundException ignored) {
}
try {
return (Class) Class.forName(javaType);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
//TODO make the instantiation mechanism configurable
@SuppressWarnings("unchecked")
public static void instantiate(Class type, Object value, Consumer setter) {
if (value != null) {
if (type.isInstance(value)) {
setter.accept(type.cast(value));
} else if (value instanceof Class && type.isAssignableFrom((Class) value)) {
//noinspection unchecked
setter.accept(instantiate((Class) value));
} else if (value instanceof String) {
Class clazz = loadClass((String) value);
setter.accept(instantiate(clazz));
} else {
throw new IllegalArgumentException(String.format("Cannot handle configuration [%s]: %s", type.getName(), value));
}
}
}
//TODO make the instantiation mechanism configurable
public static V instantiate(Class clazz) {
try {
return clazz.getConstructor().newInstance();
} catch (Exception e) {
throw new IllegalArgumentException(e);
}
}
}